SumUp Solo 4G Portable Card Reader + Charging Dock

Ideal because customers want to debit card much more often than before.

I specifically purchased the Solo because I develop my own software where I would like to automatically activate a payment terminal with the correct amount. The Solo lends itself to this because it can be operated via the SumUp API. On the product page they advertise that it even works on 4g, so that sounds ideal for on the go. What was not made clear to me at all is that if you choose the API connection, it only works with WiFi! I find this a rather strange limitation since the rates really do not go down if you choose this. So they earn the same whether you choose the connection with the app, independently on WiFi and 4G or for your own API connection on WiFi.

Very inconvenient to only find this out at a trade fair, where there is only a public WiFi network. The device refuses to connect to this, so arrange your own hotspot or a router - but then it becomes a lot less practical for on the go.

Simple and good